Question: When did Budapest have a population of 1.74 million?
Paraphrase: On which year Budapest have a population of 1.74 million?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q1781 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '1.74004e+06')) . ?s pq:P585 ?value}